,申请号PL19800221476-传众专利搜索

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发明名称
摘要
申请公布号	PL221476(A1)	申请公布日期	1981.08.07
申请号	PL19800221476	申请日期	1980.01.18
申请人	KOPALNIA WEGLA KAMIENNEGO WIEC	发明人	JANKIEWICZ KAZIMIERZ;ZADECKI WIESLAW;STANEK JERZY
分类号	E21D;(IPC1-7):E21D/	主分类号	E21D
代理机构		代理人
主权项
地址

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